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dd webbing to whoopie

today i made the webbing whoopie, works well but haven't spent a full night in it. i think the stretch will be ok and from now on very easy to adjust. i did this with a empty ballpiont and a bicicle spoke. goodluck to the one who try...

The webbing is rated to 800 kg which is plenty, but I still don't trust it.

I contacted DD about their webbing ratings and was told that the suspension webbing was rated for 150 kgs (330 #). A little on the smitely side (IMO) if only using a single strap instead of the 2 as designed.

I contacted DD about their webbing ratings and was told that the suspension webbing was rated for 150 kgs (330 #). A little on the smitely side (IMO) if only using a single strap instead of the 2 as designed.

That figure will be their working load, 800kg is the breaking strain of the black webbing and doesn't account for knots, wear etc.

Assuming a knot will derate the line by an average of 50%, a 150kg load in the hammock hung at 30 deg gives the webbing a little under a 3x safety factor-much less than the normally accepted 4 or 5 to 1 margin.

[QUOTE=turnerminator;537805]That figure will be their working load, 800kg is the breaking strain of the black webbing and doesn't account for knots, wear etc. QUOTE]

So...the way the DD comes configured, does it have a 300kg working load (150kg each line - even though it is all really 1 piece of webbing)? Sounds like I won't be trying to hang from just a single line - I would prefer a little higher safety factor when a 2 foot drop on my butt is at stake.

Yeah, I'd take 300kg as the working load with the lines doubled. Thats likely to be on the safe side too.

Thats actually much higher than amsteel blue in 7/64, so Its definitely not a worry unless you are 300kg in weight

I think its more complicated than raw figures in real life though. There is massive friction on say a pine trees bark with a wrap round the trunk; it must take a large proportion of strain off the knot, thus not derating it as much. Good knots will also not derate the line as much.

My original webbing must have done close to 100 nights before I changed it for dyneema, definitely well tested doubled

I'm sure the webbing is strong enough doubled and the figures prove it, but I just didn't like it for some reason.

I switched to no stretch webbing tree straps, and dyneema whoopie slings and it really is worth it. No only is the set up far far quicker, the lack of stretch means I get the height I want first go every time.
The saving in weight is an advantage too, but not the main reason I opted for this type of suspension.
Cheers
Gareth